Raman and optical absorption spectroscopic investigation of Yb-Er codoped phosphate glasses containing SiO2
Chinese Optics Letters, Vol. 7, Issue 1, pp. 56-59 (2009)
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Abstract
Yb-Er codoped Na2O-Al2O3-P2O5-xSiO2 glasses containing 0-20 mol% SiO2 were prepared successfully. The addition of SiO2 to the phosphate glass not only lengthens the bond between P^{5+} and non-bridging oxygen but also reduces the number of P=O bond. In contrast with silicate glass in which there is only four-fold coordinated Si^{4+}, most probably there coexist [SiO4 tetrahedron and [SiO6] octahedron in our glasses. Within the range of 0-20 mol% SiO2 addition, the stimulated emission cross-section of Er^{3+} ion only decreases no more than 10%. The Judd-Ofelt intensity parameters of Er^{3+}, \Omega_{2} does not change greatly, but \Omega_{4} and \Omega_{6} decrease obviously with increasing SiO2 addition, because the bond between Er^{3+} and O^{2-} is more strongly covalently bonded.
© 2009 Chinese Optics Letters
OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.5690) Materials : Rare-earth-doped materials
(300.6170) Spectroscopy : Spectra
(300.6450) Spectroscopy : Spectroscopy, Raman
Citation
Youkuo Chen, Lei Wen, Lili Hu, Wei Chen, Y. Guyot, and G. Boulon, "Raman and optical absorption spectroscopic investigation of Yb-Er codoped phosphate glasses containing SiO2," Chin. Opt. Lett. 7, 56-59 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-1-56
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